1jGabriel

<?xml version="1.0" encoding="utf-8"?>
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:app="http://schemas.android.com/apk/res-auto"
            xmlns:tools="http://schemas.android.com/tools"
            android:id="@+id/nav_feature_three"
            app:startDestination="@id/fragment_e">
  <fragment
            android:id="@+id/fragment_e"
            android:name="io.jgabriel.featurethree.FragmentE">
    <action

1jGabriel

<?xml version="1.0" encoding="utf-8"?>
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:app="http://schemas.android.com/apk/res-auto"
            xmlns:tools="http://schemas.android.com/tools"
            android:id="@+id/nav_feature_one"
            app:startDestination="@id/fragment_a">
  
  <fragment
            android:id="@+id/fragment_a"
            android:name="io.jgabriel.featureone.FragmentA">

1jGabriel

implementation "androidx.navigation:navigation-fragment-ktx:2.2.2" 
implementation "androidx.navigation:navigation-ui-ktx:2.2.2"

1jGabriel

class MyAdapter : PagingDataAdapter<MyModel, MyAdapter.MyViewHolder>(DiffUtilCallback()) {
   // the adapter implementation still the same
}

class DiffUtilCallBack : DiffUtil.ItemCallback<MyModel>() {
    override fun areItemsTheSame(oldItem: MyModel, newItem: MyModel): Boolean {
        return oldItem.id == newItem.id
    }

    override fun areContentsTheSame(oldItem: MyModel, newItem: MyModel): Boolean {

1jGabriel

package br.com.xpto.custom.ui.view;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.support.annotation.DrawableRes;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;

1jGabriel

class MyAdapter : PagingDataAdapter<MyModel, MyAdapter.MyViewHolder>(DiffUtilCallback()) {
   // a implementação do corpo do adapter permanece a mesma
}

class DiffUtilCallBack : DiffUtil.ItemCallback<MyModel>() {
    override fun areItemsTheSame(oldItem: MyModel, newItem: MyModel): Boolean {
        return oldItem.id == newItem.id
    }

    override fun areContentsTheSame(oldItem: MyModel, newItem: MyModel): Boolean {

1jGabriel

fun getData() {
    lifecycleScope.launch {
        viewModel.getItems().collectLatest {
            adapter.submitData(it)
        }
     }
}

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fun getItems(): Flow<PagingData<MyModel>> {
    return Pager(
          config = PagingConfig(pageSize = 20),
          pagingSourceFactory = { MyPagingSource(api = api) }
    ).flow.cachedIn(viewModelScope)
}

1jGabriel

class MyPagingSource(
    private val api: MyApi
) : PagingSource<Int, MyModel>() {
    override suspend fun load(params: LoadParams<Int>): LoadResult<Int, MyModel> {
        return try {
            val result = api.getItems(params.key ?: STARTING_PAGE_INDEX)
            Page(
                data = result,
                prevKey = params.key,
                nextKey = result.nextPage ?: STARTING_PAGE_INDEX.plus(1)

1jGabriel

import android.annotation.SuppressLint
import android.content.Context
import android.content.res.ColorStateList
import android.os.Build
import android.support.annotation.RequiresApi
import android.support.design.widget.TextInputLayout
import android.support.v7.widget.AppCompatEditText